CN102369772A - Cellular network positioning method, service platform, positioning mobile bench and system - Google Patents

Cellular network positioning method, service platform, positioning mobile bench and system Download PDF

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Publication number
CN102369772A
CN102369772A CN2011800016964A CN201180001696A CN102369772A CN 102369772 A CN102369772 A CN 102369772A CN 2011800016964 A CN2011800016964 A CN 2011800016964A CN 201180001696 A CN201180001696 A CN 201180001696A CN 102369772 A CN102369772 A CN 102369772A
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current location
travelling carriage
base station
fingerprint information
received signals
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刘宇
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0252—Radio frequency fingerprinting
    • G01S5/02521—Radio frequency fingerprinting using a radio-map

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Navigation (AREA)
  • Telephone Function (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a cellular network positioning method, a service platform, a positioning mobile bench and a system, relating to the mobile communication technology field, and used for improving the positioning precision of a cellular network. The cellular network positioning method comprises the steps of receiving the signal fingerprint information of the mobile bench current position, wherein, the signal fingerprint information of any position comprises the information for measuring the characteristic quantity at the any position; according to the signal fingerprint information of preset landmark positions, carrying out fingerprint identification on the signal fingerprint information of the current position to obtain identification results, wherein, the preset landmarks are the preset landmarks according to demands; selecting the most preferable identification result in the identification results; determining the current position is the preset landmark position corresponding to the most preferable identification result.

Description

A kind of cellular network localization method, service platform, positioning mobile station and system
Technical field
The present invention relates to the mobile communication technology field, relate in particular to a kind of cellular network localization method, service platform, positioning mobile station and system.
Background technology
Along with developing rapidly of cellular network technologies, the cellular network of being set up that is used for mobile communication most of areas covering the whole world, also growing thereupon for the demand of mobile position estimation.
At present; CELL-ID (cell ID) location technology is a kind of simple cellular network location technology; This location technology reports Location Service Platform through wireless network with the residing cell id of travelling carriage; Translate into latitude and longitude coordinates to the residing cell id of travelling carriage by Location Service Platform, so just can not increase equipment and not change under the situation of network configuration the location of realization travelling carriage in wireless network side.
But the precision of above-mentioned CELL-ID location technology depends on the size of sub-district in the cellular network of being set up.For example, radius of society is about 300～500 meters in the urban district, and this is 300～500 meters with regard to the precision that has determined the CELL-ID location technology in the urban district; And for example, usually more than 1 kilometer, this has determined that the precision of the CELL-ID location technology in the suburb is more than 1 kilometer equally at the suburb radius of society.Obviously, this CELL-ID location technology can only be with mobile position estimation in the sub-district, and can not confirm the position of this travelling carriage more accurately, so the precision of obviously existing CELL-ID location technology is lower, has been difficult to satisfy the demand of user to positioning accuracy.
Summary of the invention
Embodiments of the invention provide a kind of cellular network localization method, service platform, positioning mobile station and system, in order to improve the positioning accuracy of cellular network.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand a kind of cellular network localization method is provided, comprises:
The received signals fingerprint information of receiving mobile current location; And the received signals fingerprint information of arbitrary position comprises the characteristic quantity that is used to weigh said arbitrary position;
According to the received signals fingerprint information of each preset landmark locations, the received signals fingerprint information of said current location is carried out fingerprint recognition, obtain recognition result; Saidly be designated as predefined as required terrestrial reference presetly;
Choose the optimal identification result in the said recognition result;
Confirm that current location is said optimal identification result corresponding preset landmark locations.
A kind of service platform is provided on the other hand, comprises:
Receiving element is used for the received signals fingerprint information of receiving mobile current location; And the received signals fingerprint information of arbitrary position comprises the characteristic quantity that is used to weigh said arbitrary position;
Recognition unit is used for the received signals fingerprint information according to each preset landmark locations, and the received signals fingerprint information of said current location is carried out fingerprint recognition, obtains recognition result; Saidly be designated as predefined as required terrestrial reference presetly;
Choose the unit, be used for choosing the optimal identification result of said recognition result;
Confirm the unit, be used for confirming that current location is said optimal identification result corresponding preset landmark locations.
On the one hand, a kind of positioning mobile station is provided again, is provided with service platform in this positioning mobile station.
Another aspect provides a kind of cellular network navigation system, it is characterized in that, comprising: travelling carriage and service platform.
The embodiment of the invention provides a kind of cellular network localization method, service platform, positioning mobile station and system; Received signals fingerprint information according to each preset landmark locations; Received signals fingerprint information to current location is carried out fingerprint recognition; Obtain recognition result, and optimal identification result corresponding preset landmark locations is confirmed as current location; Owing to be designated as predefined as required terrestrial reference presetly; Promptly can be in advance with the position that needs the location in the zone as preset terrestrial reference, so utilize scheme provided by the invention can the travelling carriage current location be positioned near the preset terrestrial reference near the travelling carriage current location; Compared with prior art; Scheme provided by the invention is not used and is confirmed this coarse location technology in travelling carriage sub-district, place; But through in all preset landmark locations, selecting and the immediate preset terrestrial reference of travelling carriage current location; Confirming the travelling carriage current location, thereby can improve the positioning accuracy of cellular network.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
A kind of cellular network localization method flow chart that Fig. 1 provides for the embodiment of the invention one;
A kind of service platform block diagram that Fig. 2 provides for the embodiment of the invention two;
A kind of positioning mobile station structure chart that Fig. 3 provides for the embodiment of the invention three;
A kind of cellular network navigation system structure chart that Fig. 4 provides for the embodiment of the invention four.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Embodiment one
As shown in Figure 1, the embodiment of the invention provides a kind of cellular network localization method, and the executive agent of this localization method can be a service platform, and this service platform can be arranged in the travelling carriage, also can connect to form the cellular network navigation system with travelling carriage.Said cellular network localization method comprises:
101, the received signals fingerprint information of receiving mobile current location; And the received signals fingerprint information of arbitrary position comprises the characteristic quantity that is used to weigh said arbitrary position;
Preferably, in all embodiment of the present invention, the received signals fingerprint information of said arbitrary position can comprise at least one in the following characteristic quantity:
The power that transmits of travelling carriage base station in service sector of received said travelling carriage current location in arbitrary position; Aforementioned content is a characteristic quantity in the received signals fingerprint information.In all embodiment of the present invention, the current location that said arbitrary position is an information desk perhaps is one in the preset landmark locations; The Serving cell of said travelling carriage current location is the residing sub-district of travelling carriage current location.
The power that transmits of travelling carriage at least one neighbor base station of the Serving cell of received said travelling carriage current location in arbitrary position; The number of the characteristic quantity in the aforementioned content is the number of said adjacent area.
The base station in service sector of travelling carriage received said travelling carriage current location in arbitrary position is sent the channel time delay expansion of signal; Aforementioned content is a characteristic quantity in the received signals fingerprint information.Said channel time delay expansion is the tolerance about the multipath channel temporal extension; Can estimate through the method for estimation of multiple classics; General, cell base station be can be interpreted as and the time of advent the latest that reaches travelling carriage and the time difference of earliest arrival time transmitted a signal to.
At least one neighbor base station of the Serving cell of travelling carriage received said travelling carriage current location in arbitrary position sends the channel time delay expansion of signal; The number of the characteristic quantity in the aforementioned content is the number of said adjacent area.
Travelling carriage transmits a signal to the time of advent of the base station in service sector of said travelling carriage current location in arbitrary position; Aforementioned content is a characteristic quantity in the received signals fingerprint information.
Travelling carriage transmits a signal to time of advent of at least one neighbor base station of the Serving cell of said travelling carriage current location in arbitrary position; The number of the characteristic quantity in the aforementioned content is the number of said adjacent area.
Travelling carriage sends a signal to the time of advent of the base station in service sector of said travelling carriage current location in arbitrary position; With the time of advent of at least one neighbor base station of the Serving cell that sends a signal to said travelling carriage current location in this arbitrary position, the time of advent that both ask difference to obtain is poor; The number of the characteristic quantity in the aforementioned content is the number of said adjacent area.
Wherein, the received signals fingerprint information of current location comprises the characteristic quantity that is used to weigh current location.
Concrete, for example the sub-district number is 4 in all embodiment of the present invention, is respectively sub-district 0, sub-district 1, sub-district 2, sub-district 3; The current location of travelling carriage sub-district of living in for example again, promptly the Serving cell of travelling carriage current location is sub-district 0, and sub-district 1, sub-district 2, sub-district 3 all are adjacent areas of sub-district 0.The received signals fingerprint information of current location can comprise at least one in the following N characteristic quantity, and x 0, jJ (the individual characteristic quantity of 1≤j≤N) of expression current location; To this concrete example N is 15.
Concrete, travelling carriage comprises following at least one characteristic quantity in the received signals fingerprint information of current location:
Travelling carriage is that the power that transmits of 0 base station, sub-district is designated as x in the base station in service sector of the received travelling carriage current location of current location 0,1
Travelling carriage is that the power that transmits of 1 base station, sub-district, 2 base stations, sub-district, 3 base stations, sub-district is designated as x respectively at least one neighbor base station of the Serving cell of the received said travelling carriage current location of current location 0,2, x 0,3, x 0,4
Travelling carriage is that the channel time delay expansion of sub-district 0 base station transmit signals is designated as x in the base station in service sector of the received said travelling carriage current location of current location 0,5
Travelling carriage is that the channel time delay expansion of 1 base station, sub-district, 2 base stations, sub-district, sub-district 3 base station transmit signals is designated as x respectively at least one neighbor base station of the Serving cell of the received said travelling carriage current location of current location 0,6, x 0,7, x 0,8
The base station in service sector that travelling carriage transmits a signal to said travelling carriage current location in current location is to be designated as x the time of advent of 0 base station, sub-district respectively 0,9
Travelling carriage transmits a signal to the Serving cell of said travelling carriage current location in current location at least one neighbor base station is to be designated as x the time of advent of 1 base station, sub-district, 2 base stations, sub-district, 3 base stations, sub-district respectively 0,10, x 0,11, x 0,12
Travelling carriage is the time of advent of 0 base station, sub-district in the base station in service sector that current location sends a signal to said travelling carriage current location; With the time of advent that neighbor base station is 1 base station, sub-district of the Serving cell that sends a signal to said travelling carriage current location in current location, the difference time of advent that both ask difference to obtain is designated as x 0,13
Travelling carriage is the time of advent of 0 base station, sub-district in the base station in service sector that current location sends a signal to said travelling carriage current location; With the time of advent that neighbor base station is 2 base stations, sub-district of the Serving cell that sends a signal to said travelling carriage current location in current location, the difference time of advent that both ask difference to obtain is designated as x 0,14
Travelling carriage is the time of advent of 0 base station, sub-district in the base station in service sector that current location sends a signal to said travelling carriage current location; With the time of advent that neighbor base station is 3 base stations, sub-district of the Serving cell that sends a signal to said travelling carriage current location in current location, the difference time of advent that both ask difference to obtain is designated as x 0,15
102, according to the received signals fingerprint information of each preset landmark locations, the received signals fingerprint information of said current location is carried out fingerprint recognition, obtain recognition result; Saidly be designated as predefined as required terrestrial reference presetly;
To the personal user, said predefined as required terrestrial reference can comprise any place that maybe needs of this personal user;
To the user of unit, said predefined as required terrestrial reference can comprise the needed place of all users in this unit;
To operator, said predefined as required terrestrial reference can be with all common location of the subregion of whole cellular network or cellular network.
Preferably, in 101, set forth, the received signals fingerprint information of arbitrary position comprises above-mentioned at least one characteristic quantity.Concrete, the received signals fingerprint information of arbitrary preset landmark locations comprises at least one in the following characteristic quantity, wherein, and x I, jBe used to represent i (j of individual preset landmark locations of 1≤i≤K) (and the individual characteristic quantity of 1≤j≤N), K is the number of preset landmark locations, N is the number of characteristic quantity:
Travelling carriage is that the power that transmits of 0 base station, sub-district is designated as x in the base station in service sector of the received travelling carriage current location of i preset landmark locations I, 1
Travelling carriage is that the power that transmits of 1 base station, sub-district, 2 base stations, sub-district, 3 base stations, sub-district is designated as x respectively at least one neighbor base station of the Serving cell of the received said travelling carriage current location of i preset landmark locations I, 2, x I, 3, x I, 4
Travelling carriage is that the channel time delay expansion of sub-district 0 base station transmit signals is designated as x in the base station in service sector of the received said travelling carriage current location of i preset landmark locations I, 5
Travelling carriage is that the channel time delay expansion of 1 base station, sub-district, 2 base stations, sub-district, sub-district 3 base station transmit signals is designated as x respectively at least one neighbor base station of the Serving cell of the received said travelling carriage current location of i preset landmark locations I, 6, x I, 7, x I, 8
The base station in service sector that travelling carriage transmits a signal to said travelling carriage current location i preset landmark locations is to be designated as x the time of advent of 0 base station, sub-district respectively I, 9
At least one neighbor base station that travelling carriage transmits a signal to the Serving cell of said travelling carriage current location i preset landmark locations is to be designated as x the time of advent of 1 base station, sub-district, 2 base stations, sub-district, 3 base stations, sub-district respectively I, 10, x I, 11, x I, 12
Travelling carriage is the time of advent of 0 base station, sub-district in the base station in service sector that i preset landmark locations sends a signal to said travelling carriage current location; With the time of advent that neighbor base station is 1 base station, sub-district of the Serving cell that sends a signal to said travelling carriage current location in current location, the difference time of advent that both ask difference to obtain is designated as x I, 13
Travelling carriage is the time of advent of 0 base station, sub-district in the base station in service sector that i preset landmark locations sends a signal to said travelling carriage current location; With the time of advent that neighbor base station is 2 base stations, sub-district of the Serving cell that sends a signal to said travelling carriage current location in current location, the difference time of advent that both ask difference to obtain is designated as x I, 14
Travelling carriage is the time of advent of 0 base station, sub-district in the base station in service sector that current location sends a signal to said travelling carriage current location; With the time of advent that neighbor base station is 3 base stations, sub-district of the Serving cell that sends a signal to said travelling carriage current location in current location, the difference time of advent that both ask difference to obtain is designated as x I, 15
Said received signals fingerprint information according to each preset landmark locations is carried out fingerprint recognition to the received signals fingerprint information of said current location, obtains this process of recognition result and can adopt in following two kinds of methods any:
First method: ask for the mean square error of the character pair amount in the received signals fingerprint information of at least one characteristic quantity and each preset terrestrial reference in the received signals fingerprint information of said current location, obtaining all mean square errors is recognition result;
Utilize first method to ask for recognition result in the present embodiment, can use all or part of characteristic quantity of each position to ask for recognition result, in embodiments of the present invention with use each all characteristic quantity of putting for example N set forth as example.
Be formulated, current location is with respect to the recognition result Y of the individual preset landmark locations of i iFor:
Y i = 1 N Σ j = 1 N ( x 0 , j - x i , j ) 2 , i ∈ [ 1 , K ] , J representes j characteristic quantity.
Concrete, to the example among the invention described above embodiment, current location is with respect to the recognition result Y of the individual preset landmark locations of i iBe specially:
Y i = 1 15 Σ j = 1 15 ( x 0 , j - x i , j ) 2 , i ∈ [ 1 , K ] , J representes j characteristic quantity.
More than two recognition result Y that formula obtains iCan reflect current location and i the error size between the preset landmark locations character pair amount, thereby all recognition results can reflect the distance relation of current location and each preset landmark locations.
Second method: according to the importance of characteristic quantity in the received signals fingerprint information; The mean square error of the character pair amount in the received signals fingerprint information of at least one characteristic quantity and each preset landmark locations in the received signals fingerprint information of said current location is asked in weighting, and all mean square errors after obtaining weighting and asking for are recognition result.
Utilize second method to ask for recognition result in the present embodiment, can use all or part of characteristic quantity weighting of each position to ask for recognition result, in embodiments of the present invention with use each all characteristic quantity of putting for example N set forth as example.
Be formulated, the current location that the obtains recognition result Y with respect to the individual preset landmark locations of i is asked in weighting iFor:
J representes j characteristic quantity, wherein δ jBe the weight that is provided with in advance according to the importance of j characteristic quantity in all characteristic quantities in the received signals fingerprint information.
Concrete, to the example among the invention described above embodiment, the current location that the obtains recognition result Y with respect to the individual preset landmark locations of i is asked in weighting iBe specially:
Figure BDA0000096420520000081
J representes j characteristic quantity, wherein δ jBe the weight that is provided with in advance according to the importance of j characteristic quantity in all characteristic quantities in the received signals fingerprint information, and δ jCan be 0.
In the second approach; Difference according to the importance of each characteristic quantity; Give different weights to each characteristic quantity error; For example: travelling carriage is at the power that transmits of a neighbor base station (for example 1 base station, sub-district) of the received Serving cell of current location (for example the sub-district 0), and is more important at the power that transmits of the another neighbor base station (for example 2 base stations, sub-district) of the received Serving cell of current location (for example the sub-district 0) than travelling carriage, then calculating (x 0,2-x I, 2+ δ 2) in δ 2Than (x 0,3-x I, 3+ δ 3) in δ 3Value want big, thereby can the importance of each characteristic quantity be reflected in recognition result.
The recognition result Y that obtains is asked in weighting iCan reflect current location and i the error size between the preset landmark locations character pair amount; Thereby all recognition results can concern according to the distance of the importance of each characteristic quantity reflection current location with each preset landmark locations, so accurate localization more.
Ask for recognition result characterizing the method for far and near relation between current location and the preset landmark locations, more than above-mentioned two kinds of methods, and above-mentioned two kinds of methods just conduct to obtain two kinds of preferred implementations of recognition result for reference.
In above-mentioned second method, also can be formulated weighting and ask for and obtain the recognition result Y of current location with respect to the individual preset landmark locations of i iFor:
Y i = 1 N Σ j = 1 N [ ω j ( x 0 , j - x i , j ) ] 2 , i ∈ [ 1 , K ] , J representes j characteristic quantity, wherein ω jBe the weight factor that is provided with in advance according to the importance of j characteristic quantity in all characteristic quantities in the received signals fingerprint information.
Concrete, to the example among the invention described above embodiment, the current location that the obtains recognition result Y with respect to the individual preset landmark locations of i is asked in weighting iBe specially:
Y i = 1 15 Σ j = 1 15 [ ω j ( x 0 , j - x i , j ) ] 2 , i ∈ [ 1 , K ] , J representes j characteristic quantity, wherein ω jBe the weight factor that is provided with in advance according to the importance of j characteristic quantity in all characteristic quantities in the received signals fingerprint information, and ω jCan be 0.
This method is according to the difference of the importance of each characteristic quantity; Give different weights to each characteristic quantity error; For example: travelling carriage is at the power that transmits of a neighbor base station (for example 1 base station, sub-district) of the received Serving cell of current location (for example the sub-district 0); More important than travelling carriage at the power that transmits of the another neighbor base station (for example 2 base stations, sub-district) of the received Serving cell of current location (for example the sub-district 0), then calculating ω 2(x 0,2-x I, 2) and ω 3(x 0,3-x I, 3) time, the ω of setting 2Value compare ω 3Value big, thereby can the importance of each characteristic quantity be reflected in recognition result.
The recognition result Y that obtains is asked in weighting iCan reflect current location and i the error size between the preset landmark locations character pair amount; Thereby all recognition results can concern according to the distance of the importance of each characteristic quantity reflection current location with each preset landmark locations, so accurate localization more.
103, choose optimal identification result in the said recognition result;
Said optimal identification result is for characterizing the recognition result of a preset landmark locations nearest apart from current location in all recognition results.
Preferably, owing to recognition result Y in 102 preferred implementation iSize can reflect current location and i the far and near relation of preset landmark locations, and recognition result Y iThe more little current location of then representing is near more apart from i preset landmark locations; Because the preset landmark locations that optimal identification result is nearest apart from current location, so 103 preferred embodiment modes are: a recognition result choosing numerical value minimum in the said recognition result is as optimal identification result.
104, confirm that current location is said optimal identification result corresponding preset landmark locations.
Because optimal identification result can characterize a preset landmark locations nearest apart from current location, so said optimal identification result corresponding preset landmark locations is a preset landmark locations nearest apart from current location.
In all embodiment of the present invention, the display format that all preset landmark locations are presented to personal user or operator can be discernible label (for example Hong'an primary school doorway), also can be detailed latitude and longitude information.
The embodiment of the invention provides a kind of cellular network localization method; Received signals fingerprint information according to each preset landmark locations; Received signals fingerprint information to current location is carried out fingerprint recognition, obtains recognition result, and optimal identification result corresponding preset landmark locations is confirmed as current location; Owing to be designated as predefined as required terrestrial reference presetly; Promptly can be in advance with the position that needs the location in the zone as preset terrestrial reference, so utilize scheme provided by the invention can the travelling carriage current location be positioned near the preset terrestrial reference near the travelling carriage current location; Compared with prior art; Scheme provided by the invention is not used and is confirmed this coarse location technology in travelling carriage sub-district, place; But through in all preset landmark locations, selecting and the immediate preset terrestrial reference of travelling carriage current location; Confirming the travelling carriage current location, thereby can improve the positioning accuracy of cellular network.
Embodiment two
As shown in Figure 2, the embodiment of the invention provides a kind of and above-mentioned cellular network localization method corresponding service platform 200, comprising: receiving element 201, recognition unit 202, choose unit 203 and definite unit 204.
Said receiving element 201 is used for the received signals fingerprint information of receiving mobile current location; And the received signals fingerprint information of arbitrary position comprises the characteristic quantity that is used to weigh said arbitrary position;
Preferably, in all embodiment of the present invention, the received signals fingerprint information of said arbitrary position can comprise at least one in the following characteristic quantity:
The power that transmits of travelling carriage base station in service sector of received said travelling carriage current location in arbitrary position; Aforementioned content is a characteristic quantity in the received signals fingerprint information.In all embodiment of the present invention, the current location that said arbitrary position is an information desk perhaps is one in the preset landmark locations; The Serving cell of said travelling carriage current location is the residing sub-district of travelling carriage current location.
The power that transmits of travelling carriage at least one neighbor base station of the Serving cell of received said travelling carriage current location in arbitrary position; The number of the characteristic quantity in the aforementioned content is the number of said adjacent area.
The base station in service sector of travelling carriage received said travelling carriage current location in arbitrary position is sent the channel time delay expansion of signal; Aforementioned content is a characteristic quantity in the received signals fingerprint information.Said channel time delay expansion is that cell base station transmits a signal to the time of advent the latest that reaches travelling carriage and the time difference of earliest arrival time.
At least one neighbor base station of the Serving cell of travelling carriage received said travelling carriage current location in arbitrary position sends the channel time delay expansion of signal; The number of the characteristic quantity in the aforementioned content is the number of said adjacent area.
Travelling carriage transmits a signal to the time of advent of the base station in service sector of said travelling carriage current location in arbitrary position; Aforementioned content is a characteristic quantity in the received signals fingerprint information.
Travelling carriage transmits a signal to time of advent of at least one neighbor base station of the Serving cell of said travelling carriage current location in arbitrary position; The number of the characteristic quantity in the aforementioned content is the number of said adjacent area.
Travelling carriage sends a signal to the time of advent of the base station in service sector of said travelling carriage current location in arbitrary position; With the time of advent of at least one neighbor base station of the Serving cell that sends a signal to said travelling carriage current location in this arbitrary position, the time of advent that both ask difference to obtain is poor; The number of the characteristic quantity in the aforementioned content is the number of said adjacent area.
Wherein, the received signals fingerprint information of current location comprises the characteristic quantity that is used to weigh current location.
Concrete, for example the sub-district number is 4 in all embodiment of the present invention, is respectively sub-district 0, sub-district 1, sub-district 2, sub-district 3; The current location of travelling carriage sub-district of living in for example again, promptly the Serving cell of travelling carriage current location is sub-district 0, and sub-district 1, sub-district 2, sub-district 3 all are adjacent areas of sub-district 0.The received signals fingerprint information of current location can comprise at least one in the following N characteristic quantity, and x 0, jJ (the individual characteristic quantity of 1≤j≤N) of expression current location; To this concrete example N is 15.
Concrete, travelling carriage comprises following at least one characteristic quantity in the received signals fingerprint information of current location:
Travelling carriage is that the power that transmits of 0 base station, sub-district is designated as x in the base station in service sector of the received travelling carriage current location of current location 0,1
Travelling carriage is that the power that transmits of 1 base station, sub-district, 2 base stations, sub-district, 3 base stations, sub-district is designated as x respectively at least one neighbor base station of the Serving cell of the received said travelling carriage current location of current location 0,2, x 0,3, x 0,4
Travelling carriage is that the channel time delay expansion of sub-district 0 base station transmit signals is designated as x in the base station in service sector of the received said travelling carriage current location of current location 0,5
Travelling carriage is that the channel time delay expansion of 1 base station, sub-district, 2 base stations, sub-district, sub-district 3 base station transmit signals is designated as x respectively at least one neighbor base station of the Serving cell of the received said travelling carriage current location of current location 0,6, x 0,7, x 0,8
The base station in service sector that travelling carriage transmits a signal to said travelling carriage current location in current location is to be designated as x the time of advent of 0 base station, sub-district respectively 0,9
Travelling carriage transmits a signal to the Serving cell of said travelling carriage current location in current location at least one neighbor base station is to be designated as x the time of advent of 1 base station, sub-district, 2 base stations, sub-district, 3 base stations, sub-district respectively 0,10, x 0,11, x 0,12
Travelling carriage is the time of advent of 0 base station, sub-district in the base station in service sector that current location sends a signal to said travelling carriage current location; With the time of advent that neighbor base station is 1 base station, sub-district of the Serving cell that sends a signal to said travelling carriage current location in current location, the difference time of advent that both ask difference to obtain is designated as x 0,13
Travelling carriage is the time of advent of 0 base station, sub-district in the base station in service sector that current location sends a signal to said travelling carriage current location; With the time of advent that neighbor base station is 2 base stations, sub-district of the Serving cell that sends a signal to said travelling carriage current location in current location, the difference time of advent that both ask difference to obtain is designated as x 0,14
Travelling carriage is the time of advent of 0 base station, sub-district in the base station in service sector that current location sends a signal to said travelling carriage current location; With the time of advent that neighbor base station is 3 base stations, sub-district of the Serving cell that sends a signal to said travelling carriage current location in current location, the difference time of advent that both ask difference to obtain is designated as x 0,15
Said recognition unit 202 is used for the received signals fingerprint information according to each preset landmark locations, and the received signals fingerprint information of said current location is carried out fingerprint recognition, obtains recognition result; Saidly be designated as predefined as required terrestrial reference presetly;
To the personal user, said predefined as required terrestrial reference can comprise any place that maybe needs of this personal user;
To the user of unit, said predefined as required terrestrial reference can comprise the needed place of all users in this unit;
To operator, said predefined as required terrestrial reference can be with all common location of the subregion of whole cellular network or cellular network.
Preferably, in receiving element 201, set forth, the received signals fingerprint information of arbitrary position comprises above-mentioned at least one characteristic quantity.Concrete, the received signals fingerprint information of arbitrary preset landmark locations comprises at least one in the following characteristic quantity, wherein, and x I, jBe used to represent i (j of individual preset landmark locations of 1≤i≤K) (and the individual characteristic quantity of 1≤j≤N), K is the number of preset landmark locations, N is the number of characteristic quantity:
Travelling carriage is that the power that transmits of 0 base station, sub-district is designated as x in the base station in service sector of the received travelling carriage current location of i preset landmark locations I, 1
Travelling carriage is that the power that transmits of 1 base station, sub-district, 2 base stations, sub-district, 3 base stations, sub-district is designated as x respectively at least one neighbor base station of the Serving cell of the received said travelling carriage current location of i preset landmark locations I, 2, x I, 3, x I, 4
Travelling carriage is that the channel time delay expansion of sub-district 0 base station transmit signals is designated as x in the base station in service sector of the received said travelling carriage current location of i preset landmark locations I, 5
Travelling carriage is that the channel time delay expansion of 1 base station, sub-district, 2 base stations, sub-district, sub-district 3 base station transmit signals is designated as x respectively at least one neighbor base station of the Serving cell of the received said travelling carriage current location of i preset landmark locations I, 6, x I, 7, x I, 8
The base station in service sector that travelling carriage transmits a signal to said travelling carriage current location i preset landmark locations is to be designated as x the time of advent of 0 base station, sub-district respectively I, 9
At least one neighbor base station that travelling carriage transmits a signal to the Serving cell of said travelling carriage current location i preset landmark locations is to be designated as x the time of advent of 1 base station, sub-district, 2 base stations, sub-district, 3 base stations, sub-district respectively I, 10, x I, 11, x I, 12
Travelling carriage is the time of advent of 0 base station, sub-district in the base station in service sector that i preset landmark locations sends a signal to said travelling carriage current location; With the time of advent that neighbor base station is 1 base station, sub-district of the Serving cell that sends a signal to said travelling carriage current location in current location, the difference time of advent that both ask difference to obtain is designated as x I, 13
Travelling carriage is the time of advent of 0 base station, sub-district in the base station in service sector that i preset landmark locations sends a signal to said travelling carriage current location; With the time of advent that neighbor base station is 2 base stations, sub-district of the Serving cell that sends a signal to said travelling carriage current location in current location, the difference time of advent that both ask difference to obtain is designated as x I, 14
Travelling carriage is the time of advent of 0 base station, sub-district in the base station in service sector that current location sends a signal to said travelling carriage current location; With the time of advent that neighbor base station is 3 base stations, sub-district of the Serving cell that sends a signal to said travelling carriage current location in current location, the difference time of advent that both ask difference to obtain is designated as x I, 15
Preferably; Said recognition unit 202 specifically is used for asking for the mean square error of the character pair amount in the received signals fingerprint information of at least one characteristic quantity and each preset terrestrial reference of received signals fingerprint information of said current location, and obtaining all mean square errors is recognition result;
This recognition unit 202 is asked for recognition result in the present embodiment, can use all or part of characteristic quantity of each position to ask for recognition result, in embodiments of the present invention with use each all characteristic quantity of putting for example N set forth as example.
Be formulated, current location is with respect to the recognition result Y of the individual preset landmark locations of i iFor:
Y i = 1 N Σ j = 1 N ( x 0 , j - x i , j ) 2 , i ∈ [ 1 , K ] , J representes j characteristic quantity.
Concrete, to the example among the invention described above embodiment, current location is with respect to the recognition result Y of the individual preset landmark locations of i iBe specially:
Y i = 1 15 Σ j = 1 15 ( x 0 , j - x i , j ) 2 , i ∈ [ 1 , K ] , J representes j characteristic quantity.
More than two recognition result Y that formula obtains iCan reflect current location and i the error size between the preset landmark locations character pair amount, thereby all recognition results can reflect the distance relation of current location and each preset landmark locations.
Perhaps preferred; Said recognition unit 202 specifically is used for the importance according to received signals fingerprint information characteristic quantity; The mean square error of the character pair amount in the received signals fingerprint information of at least one characteristic quantity and each preset landmark locations in the received signals fingerprint information of said current location is asked in weighting, and all mean square errors after obtaining weighting and asking for are recognition result.
This recognition unit 202 is asked for recognition result in the present embodiment, can use all or part of characteristic quantity weighting of each position to ask for recognition result, in embodiments of the present invention with use each all characteristic quantity of putting for example N set forth as example.
Be formulated, the current location that the obtains recognition result Y with respect to the individual preset landmark locations of i is asked in weighting iFor:
Figure BDA0000096420520000143
J representes j characteristic quantity, wherein δ jBe the weight that is provided with in advance according to the importance of j characteristic quantity in all characteristic quantities in the received signals fingerprint information.
Concrete, to the example among the invention described above embodiment, the current location that the obtains recognition result Y with respect to the individual preset landmark locations of i is asked in weighting iBe specially:
J representes j characteristic quantity, wherein δ jBe the weight that is provided with in advance according to the importance of j characteristic quantity in all characteristic quantities in the received signals fingerprint information, and δ jCan be 0.
The difference of concrete importance according to each characteristic quantity; Give different weights to each characteristic quantity error; For example: travelling carriage is at the power that transmits of a neighbor base station (for example 1 base station, sub-district) of the received Serving cell of current location (for example the sub-district 0); More important than travelling carriage at the power that transmits of the another neighbor base station (for example 2 base stations, sub-district) of the received Serving cell of current location (for example the sub-district 0), then calculating (x 0,2-x I, 2+ δ 2) in δ 2Than (x 0,3-x I, 3+ δ 3) in δ 3Value want big, thereby can the importance of each characteristic quantity be reflected in recognition result.
The recognition result Y that obtains is asked in weighting iCan reflect current location and i the error size between the preset landmark locations character pair amount; Thereby all recognition results can concern according to the distance of the importance of each characteristic quantity reflection current location with each preset landmark locations, so accurate localization more.
Ask for recognition result characterizing the method for far and near relation between current location and the preset landmark locations, more than above-mentioned two kinds of methods, and above-mentioned two kinds of methods just conduct to obtain two kinds of preferred implementations of recognition result for reference.
The said unit 203 of choosing is used for choosing the optimal identification result of said recognition result;
Said optimal identification result is for characterizing the recognition result of a preset landmark locations nearest apart from current location in all recognition results.
Preferably, owing to recognition result Y in the preferred implementation of recognition unit 202 iSize can reflect current location and i the far and near relation of preset landmark locations, and recognition result Y iThe more little current location of then representing is near more apart from i preset landmark locations; Because the preset landmark locations that optimal identification result is nearest apart from current location, so preferred, the said unit 203 of choosing specifically is used for choosing a minimum recognition result of said recognition result numerical value as optimal identification result.
Said definite unit 204 is used for confirming that current location is said optimal identification result corresponding preset landmark locations.
Because optimal identification result can characterize a preset landmark locations nearest apart from current location, so said optimal identification result corresponding preset landmark locations is a preset landmark locations nearest apart from current location.
In all embodiment of the present invention, the display format that all preset landmark locations are presented to personal user or operator can be discernible label (for example Hong'an primary school doorway), also can be detailed latitude and longitude information.
The embodiment of the invention provides a kind of service platform; Received signals fingerprint information according to each preset landmark locations; Received signals fingerprint information to current location is carried out fingerprint recognition, obtains recognition result, and optimal identification result corresponding preset landmark locations is confirmed as current location; Owing to be designated as predefined as required terrestrial reference presetly; Promptly can be in advance with the position that needs the location in the zone as preset terrestrial reference, so utilize scheme provided by the invention can the travelling carriage current location be positioned near the preset terrestrial reference near the travelling carriage current location; Compared with prior art; Scheme provided by the invention is not used and is confirmed this coarse location technology in travelling carriage sub-district, place; But through in all preset landmark locations, selecting and the immediate preset terrestrial reference of travelling carriage current location; Confirming the travelling carriage current location, thereby can improve the positioning accuracy of cellular network.
Embodiment three
As shown in Figure 3, the embodiment of the invention also provides a kind of positioning mobile station 300, and this positioning mobile station is provided with the arbitrary service platform 200 described in the embodiment two.
This service platform 200 can receive the received signals fingerprint information of these positioning mobile station 300 current locations; Received signals fingerprint information according to each preset landmark locations; Received signals fingerprint information to said current location is carried out fingerprint recognition; Obtain recognition result, and from said recognition result, choose optimal identification result, confirm that at last current location is said optimal identification result corresponding preset landmark locations.
Wherein, the received signals fingerprint information of arbitrary position comprises the characteristic quantity that is used to weigh said arbitrary position.In addition, saidly be designated as predefined as required terrestrial reference presetly.
Embodiment four
As shown in Figure 4, the embodiment of the invention also provides a kind of cellular network navigation system 400, and this cellular network navigation system comprises travelling carriage 401 and service platform 200, and this service platform 200 is the arbitrary service platform 200 described in the embodiment two.
Said travelling carriage 401 is meant the travelling carriage that does not generally have positioning function.
This service platform 200 can receive the received signals fingerprint information of these travelling carriage 401 current locations; Received signals fingerprint information according to each preset landmark locations; Received signals fingerprint information to said current location is carried out fingerprint recognition; Obtain recognition result, and from said recognition result, choose optimal identification result, confirm that at last current location is said optimal identification result corresponding preset landmark locations.
Wherein, the received signals fingerprint information of arbitrary position comprises the characteristic quantity that is used to weigh said arbitrary position.In addition, saidly be designated as predefined as required terrestrial reference presetly.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of said claim.

Claims (10)

1. a cellular network localization method is characterized in that, comprising:
The received signals fingerprint information of receiving mobile current location; And the received signals fingerprint information of arbitrary position comprises the characteristic quantity that is used to weigh said arbitrary position;
According to the received signals fingerprint information of each preset landmark locations, the received signals fingerprint information of said current location is carried out fingerprint recognition, obtain recognition result; Saidly be designated as predefined as required terrestrial reference presetly;
Choose the optimal identification result in the said recognition result;
Confirm that current location is said optimal identification result corresponding preset landmark locations.
2. cellular network localization method according to claim 1 is characterized in that, the received signals fingerprint information of said arbitrary position comprises at least one in the following characteristic quantity:
The power that transmits of travelling carriage base station in service sector of received said travelling carriage current location in arbitrary position;
The power that transmits of travelling carriage at least one neighbor base station of the Serving cell of received said travelling carriage current location in arbitrary position;
The base station in service sector of travelling carriage received said travelling carriage current location in arbitrary position is sent the channel time delay expansion of signal;
At least one neighbor base station of the Serving cell of travelling carriage received said travelling carriage current location in arbitrary position sends the channel time delay expansion of signal;
Travelling carriage transmits a signal to the time of advent of the base station in service sector of said travelling carriage current location in arbitrary position;
Travelling carriage transmits a signal to time of advent of at least one neighbor base station of the Serving cell of said travelling carriage current location in arbitrary position;
Travelling carriage sends a signal to the time of advent of the base station in service sector of said travelling carriage current location in arbitrary position; With the time of advent of at least one neighbor base station of the Serving cell that sends a signal to said travelling carriage current location in this arbitrary position, the time of advent that both ask difference to obtain is poor.
3. cellular network localization method according to claim 1 and 2 is characterized in that, said received signals fingerprint information according to each preset landmark locations is carried out fingerprint recognition to the received signals fingerprint information of said current location, obtains recognition result and comprises:
Ask for the mean square error of the character pair amount in the received signals fingerprint information of at least one characteristic quantity and each preset terrestrial reference in the received signals fingerprint information of said current location, obtaining all mean square errors is recognition result; Perhaps,
Importance according to characteristic quantity in the received signals fingerprint information; The mean square error of the character pair amount in the received signals fingerprint information of at least one characteristic quantity and each preset landmark locations in the received signals fingerprint information of said current location is asked in weighting, and all mean square errors after obtaining weighting and asking for are recognition result.
4. cellular network localization method according to claim 3 is characterized in that, the said optimal identification result of choosing in the said recognition result comprises:
A recognition result choosing numerical value minimum in the said recognition result is as optimal identification result.
5. a service platform is characterized in that, comprising:
Receiving element is used for the received signals fingerprint information of receiving mobile current location; And the received signals fingerprint information of arbitrary position comprises the characteristic quantity that is used to weigh said arbitrary position;
Recognition unit is used for the received signals fingerprint information according to each preset landmark locations, and the received signals fingerprint information of said current location is carried out fingerprint recognition, obtains recognition result; Saidly be designated as predefined as required terrestrial reference presetly;
Choose the unit, be used for choosing the optimal identification result of said recognition result;
Confirm the unit, be used for confirming that current location is said optimal identification result corresponding preset landmark locations.
6. service platform according to claim 5 is characterized in that, the received signals fingerprint information of said arbitrary position comprises at least one in the following characteristic quantity:
The power that transmits of travelling carriage base station in service sector of received said travelling carriage current location in arbitrary position;
The power that transmits of travelling carriage at least one neighbor base station of the Serving cell of received said travelling carriage current location in arbitrary position;
The base station in service sector of travelling carriage received said travelling carriage current location in arbitrary position is sent the channel time delay expansion of signal;
At least one neighbor base station of the Serving cell of travelling carriage received said travelling carriage current location in arbitrary position sends the channel time delay expansion of signal;
Travelling carriage transmits a signal to the time of advent of the base station in service sector of said travelling carriage current location in arbitrary position;
Travelling carriage transmits a signal to time of advent of at least one neighbor base station of the Serving cell of said travelling carriage current location in arbitrary position;
Travelling carriage sends a signal to the time of advent of the base station in service sector of said travelling carriage current location in arbitrary position; With the time of advent of at least one neighbor base station of the Serving cell that sends a signal to said travelling carriage current location in this arbitrary position, the time of advent that both ask difference to obtain is poor.
7. according to claim 5 or 6 described service platforms; It is characterized in that; Said recognition unit specifically is used for asking for the mean square error of the character pair amount in the received signals fingerprint information of at least one characteristic quantity and each preset terrestrial reference of received signals fingerprint information of said current location, and obtaining all mean square errors is recognition result; Perhaps,
Said recognition unit specifically is used for the importance according to received signals fingerprint information characteristic quantity; The mean square error of the character pair amount in the received signals fingerprint information of at least one characteristic quantity and each preset landmark locations in the received signals fingerprint information of said current location is asked in weighting, and all mean square errors after obtaining weighting and asking for are recognition result.
8. service platform according to claim 7 is characterized in that, chooses the unit and specifically is used for choosing a minimum recognition result of said recognition result numerical value as optimal identification result.
9. a positioning mobile station is characterized in that, is provided with the described service platform of each claim of claim 5～8 in this positioning mobile station.
10. a cellular network navigation system is characterized in that, comprising: travelling carriage and service platform; Wherein, said service platform is the described service platform of each claim of claim 5～8.
CN2011800016964A 2011-08-30 2011-08-30 Cellular network positioning method, service platform, positioning mobile bench and system Pending CN102369772A (en)

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